The environment is full of energy. You have to go as low as -273 °C before every last bit of energy is drained. With the aid of a heat pump, at least some of this natural energy can be harvested and utilised as heat for domestic hot water and central heating.

The heat pump yields the energy available from the outside air and utilises it for domestic hot water and heating systems. You simply cannot use environmental energy more intelligently or economically – all year round.

These systems are still effective at outside temperatures as low as -20°C.

To get the most out of any renewable energy system, it is important to ensure that the property is well insulated.